Toyota Tacoma (2015-2018) Service Manual: System Description
SYSTEM DESCRIPTION
1. FRONT PASSENGER OCCUPANT CLASSIFICATION SYSTEM
(a) General Description
(1) The front passenger occupant detection ECU determines whether the front passenger seat is occupied by an adult or child (with child seat) or is unoccupied, based on the load that is applied to the front passenger seat and whether the seat belt is buckled. The system restricts the deployment of the front passenger airbag, front passenger side airbag, and the front passenger seat belt pretensioner in accordance with this judgment. The result is informed to the driver through the airbag ON/OFF indicator illumination.
(b) System Configuration
(1) This system consists of the occupant detection ECU, occupant classification sensors, airbag ON/OFF indicator, seat belt buckle switches, and airbag sensor assembly.
(c) Occupant Detection ECU and Sensor
(1) The occupant classification sensors are installed on four brackets connecting the seat rail and the seat frame. The resistance values of these sensors, which vary in accordance with the load that acts on the brackets, are transmitted to the occupant detection ECU as signals. Upon receipt of the signals, the ECU determines the front passenger seat occupant conditions.
Initialization
INITIALIZATION
1. ZERO POINT CALIBRATION
NOTICE:
Make sure that the front passenger seat is not occupied before performing the
operation.
HINT:
Perform the zero point calibration and sensitivit ...
System Diagram
SYSTEM DIAGRAM
...
Other materials:
Freeze Frame Data
FREEZE FRAME DATA
1. FREEZE FRAME DATA
(a) Whenever a DTC is detected, the blind spot monitor sensor stores the current
vehicle (sensor) state as Freeze Frame Data.
2. CHECK FREEZE FRAME DATA
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the blind spot ...
Radio Broadcast cannot be Received or Poor Reception
PROCEDURE
1.
CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY
(a) Check the radio automatic station search function.
(1) Check the radio automatic station search function by activating it.
Result
Result
Proceed to
Automatic station ...
Reassembly
REASSEMBLY
PROCEDURE
1. INSTALL FRONT BUMPER COVER INSERT LH
(a) Engage the clip to install the front bumper cover insert LH.
(b) Install the bolt.
Torque:
5.9 N·m {60 kgf·cm, 52 in·lbf}
2. INSTALL FRONT BUMPER COVER INSERT RH
HINT:
U ...
